Supporters of the Stop Online Piracy Act (SOPA) are taking issue with a draft of alternate online piracy legislation circulated last week and predicting the bill would be unlikely to garner enough support to pass Congress.

The lawmakers framed their proposal as an alternative to SOPA, which has drawn a fierce backlash from the technology industry. The bill would allow the Justice Department and rightsholders to demand Web firms delete links to rogue sites; it has strong support from the entertainment and retail industries.

Issa has argued that the ITC approach would be more effective at preventing sites from popping up with new names and avoiding imposing a burden on Web firms by targeting payment processors, online ad networks and other sources of revenue for rogue websites.

But a House Judiciary Committee aide said transferring intellectual property enforcement to the ITC from the Justice Department would result in "a dramatic and costly expansion of the federal bureaucracy." The aide argued the Justice Department has the expertise to handle such cases.